CN102547543A - Method for improving accuracy of sound heard by hearing-impaired listener and hearing aid - Google Patents
Method for improving accuracy of sound heard by hearing-impaired listener and hearing aid Download PDFInfo
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- 208000032041 Hearing impaired Diseases 0.000 title abstract description 6
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- 238000012545 processing Methods 0.000 claims description 48
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Abstract
The invention discloses a method for improving the accuracy of a sound heard by a hearing-impaired listener. The method comprises the following steps of: receiving an input sound, judging whether frequency correction is required by the input sound or not, and correcting the input sound into a modified input sound if the frequency correction is required by the input sound. The key of a judgment mode refers to judgment in the frequency and sound energy of the input sound. The input sound is changed into the modified input sound, so that the sound energy of low frequency can be improved.
Description
Technical field
The present invention relates to method and the hearing aids that a kind of increase person that listens to the barrier hears the sound correctness, relates in particular to method and hearing aids that a kind of increase that sound import is carried out frequency correction person that listens to the barrier hears the sound correctness.
Background technology
The development of hearing aids is of long duration, and main concept is that sound is amplified, to help the listening barrier person to hear unheard sound originally.Thus, the speaker does not need painstakingly sound to be amplified, and just can let and listen the barrier person to hear.But listen the inaudible sound of barrier person that two specific characters are arranged: frequency is too high and intensity is too low, and the sound that possesses this two specific character is easy to just listened the barrier person to neglect.For example phonetic in the "ㄗ", "ㄘ" and "ㄙ" and other sounds on having such characteristics, so the hearing impaired is not easy to hear these syllables.Yet the hearing aids that has developed at present focuses on the energy that strengthens all sound more, really needs the syllable that strengthens and be beyond recognition out part, so will make audio distortions after amplifying.Related prior art about improve sound through the processing sound frequency is briefly following:
Prior art United States Patent (USP) the 7th, 305, No. 100 " Dynamic compression in a hearing aid " mainly is the delay that is used for reducing sound.
Prior art United States Patent (USP) the 4th, 454, No. 609 " Speech intelligibility enhancement " is done enhancing to the consonant sound of high frequency, and the ratio of central high-frequency sound is high more, and then many more high-frequency contents are enhanced.This invention is done enhancing to the consonant of high frequency, yet is unusual difficulty for when there being consonant occur for the occasion of generally speaking, and therefore is not suitable for hearing aids.
Prior art United States Patent (USP) the 4th, 759, No. 071 " Automatic noise eliminator for hearing aids " mainly is to be used for eliminating noise, and the practice removes for the sound that all is lower than certain preset value, and the sound that is higher than preset value is done compression.This technology is different with the object of the invention, and the sound that all are lower than certain preset value removed probably can cause audio distortions.
Prior art United States Patent (USP) the 6th; 577; No. 739 " Apparatus and methods for proportional audio compression and frequency shifting " offers tin barrier person who certain particular range is had hearing loss, still after voice signal is compressed with certain ratio; This technology is that all sound is done compression, can make that audio distortions is serious.
Prior art United States Patent (USP) the 7th; 609; No. 841 " Frequency shifter for use in adaptive feedback cancellers for hearing aids " have improved the shift frequency method of prior art; Only partly do shift frequency (up or down) to the signal medium-high frequency, and with the shift frequency limited proportion in 6%.The 7th, 609, though also be for No. 841 that high-frequency signal is partly made shift frequency, shift frequency size and shift frequency direction are different with the present invention.
Prior art United States Patent (USP) the 7th; 580; No. 536 " Sound enhancement for hearing-impaired listeners " proposes the sound method that a kind of enhancing person that listens to the barrier can hear; Way be with the HFS in the sound and surpass one set energy the time can carry out voltage-frequency or the lower frequency range of shift frequency to, the part (frequency that common people speak) of low frequency is not then done change.The 7th, 580, No. 536 handled high-frequency sounds are meant 32kHz (the 6th hurdle the 18th row) according to the example of specification, are not the frequency that common people speak, and the also open so-called numerical value that surpasses " energy of setting " in the middle of the specification.
Therefore, be necessary to provide a kind of and recognize the real sound that needs to do enhancing, and it is carried out the method and the device of frequency correction, to solve the disappearance of prior art.
Summary of the invention
Main purpose of the present invention provides the method that a kind of increase person that listens to the barrier hears the sound correctness.
Be to realize that above-mentioned purpose, the present invention provide a kind of increase person that listens to the barrier to hear the method for sound correctness, comprise the following steps:
A. receive a sound import;
B. judge whether this sound import need carry out the processing of frequency correction, and this sound import that wherein need carry out the frequency correction has following characteristic:
This sound import is 0%～25% with the acoustic energy of lower frequency with respect to the ratio value of these all acoustic energy of sound import in 1000 hertz (Hz), and
This sound import is A% with the acoustic energy of lower frequency with respect to the ratio value of these all acoustic energy of sound import in 6000 hertz (Hz), and wherein the A value is 0 to 80 a numerical value; And
C. need carry out the processing of frequency correction as if this sound import in step B; Then this sound import is treated to one and transforms sound import; Wherein this transformation sound import comprises the sound of a plurality of different frequencies; And this transformation sound import has following characteristic: this transformation sound import is B% with the acoustic energy of lower frequency with respect to the ratio value of these all acoustic energy of transformation sound import in 6000 hertz (Hz), and wherein the B value is 1.15 times to 10000 times of the A value.
Further, among the step B, this sound import is 0%～20% with the acoustic energy of lower frequency with respect to the ratio value of these all acoustic energy of sound import in 1000 hertz (Hz).
Further, the A value is 0 to 70 a numerical value.
Further, the B value is 1.3 times to 10000 times of the A value.
Further, adopt the mode of voltage-frequency or shift frequency that this sound import is modified to this transformation sound import among the step C.
Another main purpose of the present invention provides the hearing aids that a kind of increase person that listens to the barrier hears the sound correctness.
Be to realize above-mentioned purpose, the present invention provides a kind of hearing aids, in order to receiving a sound import, and can transform this sound import to export to the person that just listens the barrier, and this hearing aids comprises:
One radio reception device is in order to receive this sound import;
One acoustic processing module electrically connects with this radio reception device, whether need carry out the processing of frequency correction in order to judge this sound import, transforms sound import to provide one, and wherein: this sound import that need carry out the frequency correction has following characteristic:
This sound import is 0%～25% with the acoustic energy of lower frequency with respect to the ratio value of these all acoustic energy of sound import in 1000 hertz (Hz); And this sound import is A% with the acoustic energy of lower frequency with respect to the ratio value of these all acoustic energy of sound import in 6000 hertz (Hz), it is characterized in that the A value is 0 to 80 a numerical value; And this transformation sound import has following characteristic: this transformation sound import is B% with the acoustic energy of lower frequency with respect to the ratio value of these all acoustic energy of transformation sound import in 6000 hertz (Hz), it is characterized in that B value 1.15 times to 10000 times for the A value; And a loud speaker, be and this acoustic processing module electrically connects.
This sound import that further, need carry out the frequency correction has following characteristic: this sound import is 0%～20% with the acoustic energy of lower frequency with respect to the ratio value of these all acoustic energy of sound import in 1000 hertz (Hz).
Further, the A value is 0 to 70 a numerical value.
Further, the B value is 1.3 times to 10000 times of the A value.
Further, adopt the mode of voltage-frequency or shift frequency that this sound import is modified to this transformation sound import.
This shows that increase provided by the invention listens to the barrier, and the person hears that the method for sound correctness may further comprise the steps: at first, receive sound import.The second, judge whether sound import need carry out the processing of frequency correction.The sound import that wherein need carry out the frequency correction need have following characteristic: sound import is 0%～25% with the acoustic energy of lower frequency with respect to the ratio value of all acoustic energy of sound import in 1000 hertz (Hz); And sound import is A% with the acoustic energy of lower frequency with respect to the ratio value of all acoustic energy of sound import in 6000 hertz (Hz), and wherein the A value is 0 to 80 a numerical value.At last, if sound import need carry out the processing of frequency correction in second step, then sound import is modified to the transformation sound import.Wherein transform the sound that sound import comprises a plurality of different frequencies; And transform sound import and should have following characteristic: transforming sound import is B% with the acoustic energy of lower frequency with respect to the ratio value of transforming all acoustic energy of sound import in 6000 hertz (Hz), and wherein the B value is 1.15 times to 10000 times of the A value.
The person hears that the hearing aids of sound correctness comprises radio reception device, acoustic processing module and three main elements of loud speaker and increase provided by the invention listens to the barrier.The radio reception device is in order to receive sound import.The acoustic processing module is in order to judge whether sound import need carry out the processing of frequency correction, so that the transformation sound import to be provided.The sound import that wherein need carry out the frequency correction should have following characteristic: sound import is 0%～25% with the acoustic energy of lower frequency with respect to the ratio value of all acoustic energy of sound import in 1000 hertz (Hz); And sound import is A% with the acoustic energy of lower frequency with respect to the ratio value of all acoustic energy of sound import in 6000 hertz (Hz), and wherein the A value is 0 to 80 a numerical value.Transform sound import in addition and should have following characteristic: transforming sound import is B% with the acoustic energy of lower frequency with respect to the ratio value of transforming all acoustic energy of sound import in 6000 hertz (Hz), and wherein the B value is 1.15 times to 10000 times of the A value.Last loud speaker is connected with the acoustic processing module, output sound import or transformation sound import.
Description of drawings
Fig. 1 is the overall schematic of hearing aids of the present invention.
Fig. 2 is the flow chart of acoustic processing module of the present invention.
Fig. 3 is phonetic notation energy/histogram of the present invention.
Fig. 4 is the sonograph of the present invention " ㄅ ㄚ ˊ ".
Fig. 5 is the acoustic energy figure of the present invention " ㄅ ㄚ ˊ ".
Fig. 6 is the sonograph of the present invention " ㄙ ㄠ ".
Fig. 7 is the acoustic energy figure of the present invention " ㄙ ㄠ ".
Fig. 8 is first embodiment of transformation sound import of the present invention " ㄙ ㄠ ", shows the sonograph of " ㄙ ㄠ ".
Fig. 9 is first embodiment of transformation sound import of the present invention " ㄙ ㄠ ", shows the acoustic energy figure of " ㄙ ㄠ ".
Figure 10 is second embodiment of transformation sound import of the present invention " ㄙ ㄠ ", shows the sonograph of " ㄙ ㄠ ".
Figure 11 is second embodiment of transformation sound import of the present invention " ㄙ ㄠ ", shows the acoustic energy figure of " ㄙ ㄠ ".
[main element symbol description]
Acoustic processing module 12 loud speakers 13
80 tins of barrier persons 81 of sound source
Embodiment
Describe the present invention below in conjunction with accompanying drawing and specific embodiment, but not as to qualification of the present invention.
As shown in Figure 1 is the overall schematic of hearing aids of the present invention.
As shown in Figure 2 is flow chart of steps about acoustic processing module of the present invention.In addition please in the lump with reference to figure 3 to Fig. 7, it is a related embodiment of the present invention.
Step 301: receive sound import 20.
This step is accomplished by radio reception device 11, is received from the sound import 20 that sound source 80 is sent.
Step 302: to sound import 20 noise reductions.
After radio reception device 11 received sound import 20, acoustic processing module basically 12 preferably reduced noise earlier, was known technology owing to reduce the processing of noise, repeated no more at this.
Step 303: judge whether sound import 20 need carry out the processing of frequency correction.
It is emphasis that acoustic processing module in the present invention 12 is carried out step 303.According to the condition of setting in advance, need to judge whether processing by acoustic processing module 12 to these sound import 20 working frequency corrections.Earlier with reference to figure 3, be about phonetic notation energy of the present invention/frequency distribution table please, Fig. 3 is for carrying out data graphical generation the in addition when of the present invention, bright rarely furtherd investigate to the relation between sounding energy and the frequency of past.The transverse axis of Fig. 3 is 37 phonetic symbols, and the right longitudinal axis is frequency (hertz Hz), and the left side longitudinal axis is volume (decibel dB).Can be found in Figure 3, is to cover all the audible voice a variety of frequencies, including low, medium, high, and most of the Chinese phonetic consonant sound energy is concentrated in the low-frequency range of 20 ~ 1000Hz but there are several phonetic symbols such as "ㄗ", "ㄘ" or "ㄙ", with its share of low-energy ratio is very low, almost all concentrated in the high energy part.Deaf and general feel for the high-frequency sounds very low (for example, more than 6000Hz), that is, compared to the low-frequency sounds, high-frequency sounds such as "ㄗ", "ㄘ" or "ㄙ" and other than the required large volume issue, perhaps hearing impaired to hear, but if the overall volume of a larger issue, then the low-frequency part of the terms for the hearing impaired and too loud, so the overall amplified sound can not solve the problem.Even use filtering technique only to promote high-frequency energy, sound still can take place exceeded and listen barrier person's painful threshold values but still to can't hear.
Some known technology such as United States Patent (USP) 6; 577; No. 739, all sound frequencies are reduced the voice emplifying energy again give a tin barrier person, be the sound of high frequency though can help to listen a barrier person to hear originally; But because all sound frequencies reduce (comprise and can hear originally) so sound is seriously rotten, this is for listening the barrier person to bring obstacle in the study pronunciation.
Increase of the present invention listens to the barrier, and the person hears the method for sound correctness, and purpose is promptly accounting for the processing that more sound clip reduces frequency for high-frequency energy, it is modified to transforms sound import 21 (step 304); Otherwise just sound import 20 working frequencies are not handled.
The sound import 20 that need carry out frequency processing has following characteristic:
In sound numerical digit sample of signal rate is under the situation of 44100Hz, sound import 20 in 1000Hz with the acoustic energy of lower frequency with respect to the ratio value of sound import 20 all acoustic energy (with ρ
0mAs conventional letter) be 0%～25%, and sound import 20 in 6000Hz with the acoustic energy of lower frequency with respect to the ratio value of these sound import 20 all acoustic energy (with ρ
1mAs conventional letter) be A%, wherein the A value is 0 to 80 a numerical value.If sound import 20 meets this two conditions, represent its concentration of energy at HFS, be not easy to be listened the barrier person to hear, therefore must handle its frequency.
The judgment mode of step 303 has many modes to reach on actual engineering; Estimate and whether will carry out step 304 in order to want fast (for example accomplishing) at 0.01 second; The energy of for example every 1024Hz sampling observation frequency judges whether to conform with above two conditions with Fuzzy Logic again, and this kind judgement has quite multiple mode in the computing of mathematics; Therefore the mathematical operation pattern that also non-the present invention will improve repeats no more at this.The judgment mode that is noted that step 303 also can be set different thresholds, more than two conditions be through the conservative threshold after the experiment computing, if will set above two conditions suggestion of strict threshold be:
Next please refer to Fig. 4 and Fig. 5.Fig. 4 is the sonograph (transverse axis is the time, and the longitudinal axis is a wave amplitude) of " ㄅ ㄚ ˊ ", and (transverse axis is the time to Fig. 5 for the acoustic energy figure of " ㄅ ㄚ ˊ "; The longitudinal axis is a frequency; Acoustic energy is from top to bottom successively decreased and is represented according to GTG, deeply feels more and shows that energy is big more, and shallow more expression energy is more little); By finding concentration of energy among Fig. 5 in the scope of 1000～2000Hz, after calculating, can get ρ
0mBe 12.2% less than 25%, but ρ
1mBe that the A value is approximately 100, not between 0～80, so can be to " ㄅ ㄚ ˊ " working frequency correction.
Please refer to Fig. 6 and Fig. 7, Fig. 6 then is the sonograph of " ㄙ ㄠ ", and Fig. 7 is the acoustic energy figure of " ㄙ ㄠ ".By finding among Fig. 7 can be three syllables with this cent, and wherein first syllable is " ㄙ ", ρ
0mBe 0.2% less than 25%, and ρ
1mBe that the A value is 0.4%, the expression energy almost all concentrates on more than the 6000Hz, and therefore " ㄙ " this sound is difficult to hear to listening the barrier person, must deal with its frequency.Otherwise, the second syllable ρ
0mBe 16.3% less than 25%, but ρ
1mBe approximately 100%; Triphone ρ
0mBe 99.9% greater than 25%, so do not need to second syllable and the correction of triphone working frequency.
Step 304: sound import 20 is treated to transformation sound import 21.
If when step 303; Judging needs sound import 20 is done the frequency correction; Then in step 304, can sound import 20 be modified to and transform sound import 21, and this transforms sound import 21 and has following characteristic: transforming sound import 21 is B% with the acoustic energy of lower frequency with respect to the ratio of these transformation sound import 21 all acoustic energy in 6000Hz, and wherein the B value is 1.15 times to 10000 times of the A value; For asking better effect, the B value is better for 1.3 times to 10000 times of A value.Thus, transform the shared energy of sound import 21 medium-high frequency parts and reduce,, be easier to let and listen the barrier person to hear compared to original sound import 20.
The method that sound is done frequency processing has a variety of, is generally voltage-frequency or shift frequency.The practice of voltage-frequency is the sound with a certain frequency range, and equal proportion is compressed to another less frequency range.Be the sound of 0～6000Hz with original frequency for example, be compressed to 0～3000Hz, then original frequency is that the sound of 3000Hz can change to 1500Hz.Shift frequency then is that the sound with a certain frequency range moves to another frequency range, is the sound of 3000～9000Hz with original frequency for example, and the 3000Hz that moves down is to become 0～6000Hz.Voltage-frequency or shift frequency are known method, therefore do not give unnecessary details at this, are noted that frequency Correction Method of the present invention as long as can reach similar effect, also can adopt additive method not as limit.
Suppose that sound source 80 sends " ㄙ ㄠ " as sound import 20, then in step 303, acoustic processing module 12 can be judged to be needed do the frequency correction to it, so in step 304, its processing of carrying out " voltage-frequency " or " shift frequency " is transformed sound import 21 to be modified to.Please refer to Fig. 8 and Fig. 9; This figure shows that " ㄙ ㄠ " carried out voltage-frequency handles (0～22050Hz → 0～11025Hz), back; Originally first syllable " ㄙ " of high frequency is compressed into lower frequency range, and to handle back B value be 96.1%, greater than 1.15 times of A value (0.04%); Second and third syllable then has no change, and Fig. 9 can find out that the energy of 5000HZ increases.
Please refer to Figure 10 and Figure 11 in addition; This figure shows that " ㄙ ㄠ " carried out shift frequency handles back (with the past 7000Hz that moves down of the frequency more than the 7000Hz); Originally first syllable " ㄙ " of high frequency is moved into lower frequency range, and to handle back B value be 98.3%, greater than 1.15 times of A value (0.4%); Second and third syllable then has no change, and Figure 11 can find out that the energy of 1000Hz increases.
Step 305: sound import 20 or transformation sound import 21 are carried out the sound processing and amplifying.
Basically give and listen barrier person 81 to need through the sound processing and amplifying; But be to amplify usually and not according to equal proportion; But it is higher for the sound magnification ratio of especially little sound; And the sound magnification ratio that sound is bigger originally is lower, so acoustic processing module 12 need comprise sound wave amplification module or amplifier usually.Because step 305 is a known technology, therefore do not give unnecessary details at this.
Step 306: loud speaker 13 plays sound.
Loud speaker 13 processing module 12 sound after handling that plays sound.
Be noted that hearing aids 10 should be wanted ability fast processing sound, make and listen a barrier person 81 to hear sound to be close to synchronous mode; The sound length of sound import 20 should shorten as far as possible, and the time that postpones like this can shorten, and for example carries out above flow process in per 0.01 second; So in fact the length of each sound import 20 is 0.01 second; For example the time of " ㄙ ㄠ " is 1 sencond, then is actually the judgement (sound of at every turn grabbing 0.01 second judges whether and will handle that the sound of receiving is earlier judged processing earlier earlier) of carrying out 100 times; Suppose that first syllable " ㄙ " accounted for 0.1 second; All the other accounted for 0.9 sencond, and then preceding 10 times sound import 20 can be treated to transforms sound import 21, and the sound import 20 that the back is 90 times can not be treated to transforms sound import 21.
Known hearing aids is for " good morning " two words; Listen the barrier person easily the output of sound to be listened and be " stubborn peace "; This has explained that the person that why listens to the barrier nearly all says " stubborn peace " when saying " good morning " two words; Yet, listen the output sound of " good morning " two words that the barrier person heard quite not have rotten near " good morning " through after the processing mode simulated experiment of the present invention.
Above technology also can be used for other language, passes through experimental result certainly, and is particularly useful for the word of mora, is mora mostly like the word of Chinese, Japanese, Korean, is example with Chinese, and all each Chinese words have only three syllables at most.Effect for polysyllabic language such as English is then lower; But because all language all have mora, for example English " Say " listens barrier person regular meeting to say " A "; But through after the processing mode simulated experiment of the present invention, the output sound of " Say " does not quite have rotten near " Say ".
The above content; Being merely preferred embodiment of the present invention, is not to be used for limiting the scope that the present invention implements, all according to spirit of the present invention and technological means disclosed according to the present invention; And make corresponding change and distortion, the scope that all belongs to the present invention and protected.
Claims (10)
1. one kind increases the method for listening the barrier person to hear the sound correctness, comprises the following steps:
A. receive a sound import;
B. judge whether this sound import need carry out the processing of frequency correction, and this sound import that wherein need carry out the frequency correction has following characteristic:
This sound import is 0%～25% with the acoustic energy of lower frequency with respect to the ratio value of these all acoustic energy of sound import in 1000 hertz (Hz), and
This sound import is A% with the acoustic energy of lower frequency with respect to the ratio value of these all acoustic energy of sound import in 6000 hertz (Hz), and wherein the A value is 0 to 80 a numerical value; And
C. need carry out the processing of frequency correction as if this sound import in step B, then this sound import is treated to one and transform sound import, wherein this transformation sound import comprises the sound of a plurality of different frequencies, and this transformation sound import has following characteristic:
This transformation sound import is B% with the acoustic energy of lower frequency with respect to the ratio value of these all acoustic energy of transformation sound import in 6000 hertz (Hz), and wherein the B value is 1.15 times to 10000 times of the A value.
2. increase as claimed in claim 1 listens to the barrier, and the person hears the method for sound correctness; It is characterized in that; Among the step B, this sound import is 0%～20% with the acoustic energy of lower frequency with respect to the ratio value of these all acoustic energy of sound import in 1000 hertz (Hz).
3. increase as claimed in claim 2 listens to the barrier, and the person hears the method for sound correctness, it is characterized in that, the A value is 0 to 70 a numerical value.
4. hear the method for sound correctness like claim 1 or the 2 or 3 described increases person that listens to the barrier, it is characterized in that the B value is 1.3 times to 10000 times of the A value.
5. hear the method for sound correctness like claim 1 or the 2 or 3 described increases person that listens to the barrier, it is characterized in that, adopt the mode of voltage-frequency or shift frequency that this sound import is modified to this transformation sound import among the step C.
6. hearing aids in order to receiving a sound import, and can be transformed this sound import to export to the person that just listens the barrier, and this hearing aids comprises:
One radio reception device is in order to receive this sound import;
One acoustic processing module electrically connects with this radio reception device, whether need carry out the processing of frequency correction in order to judge this sound import, transforms sound import to provide one, wherein:
This sound import that need carry out the frequency correction has following characteristic:
This sound import is 0%～25% with the acoustic energy of lower frequency with respect to the ratio value of these all acoustic energy of sound import in 1000 hertz (Hz), and
This sound import is A% with the acoustic energy of lower frequency with respect to the ratio value of these all acoustic energy of sound import in 6000 hertz (Hz), it is characterized in that the A value is 0 to 80 a numerical value;
And this transformation sound import has following characteristic:
This transformation sound import is B% with the acoustic energy of lower frequency with respect to the ratio value of these all acoustic energy of transformation sound import in 6000 hertz (Hz), it is characterized in that B value 1.15 times to 10000 times for the A value; And
One loud speaker is to electrically connect with this acoustic processing module.
7. hearing aids as claimed in claim 6 is characterized in that, this sound import that need carry out the frequency correction has following characteristic:
This sound import is 0%～20% with the acoustic energy of lower frequency with respect to the ratio value of these all acoustic energy of sound import in 1000 hertz (Hz).
8. hearing aids as claimed in claim 7 is characterized in that, the A value is 0 to 70 a numerical value.
9. like claim 6 or 7 or 8 described hearing aidss, it is characterized in that the B value is 1.3 times to 10000 times of the A value.
10. like claim 6 or 7 or 8 described hearing aidss, it is characterized in that, is to adopt the mode of voltage-frequency or shift frequency that this sound import is modified to this transformation sound import.
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| CN103581815A (en) * | 2012-08-08 | 2014-02-12 | 杨国屏 | Method for improving correctness of sounds heard by hearing-impaired listeners and hearing aid |
| CN104905909A (en) * | 2014-03-11 | 2015-09-16 | 奥迪康医疗有限公司 | Bilateral hearing assistance system and method of fitting bilateral hearing assistance system |
| CN105681966A (en) * | 2014-11-19 | 2016-06-15 | 塞舌尔商元鼎音讯股份有限公司 | Denoising method and electronic device |
| TWI662544B (en) * | 2018-05-28 | 2019-06-11 | 塞席爾商元鼎音訊股份有限公司 | Method for detecting ambient noise to change the playing voice frequency and sound playing device thereof |
| TWI662545B (en) * | 2018-06-22 | 2019-06-11 | 塞席爾商元鼎音訊股份有限公司 | Method for adjusting voice frequency and sound playing device thereof |
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| CN110830897A (en) * | 2018-08-08 | 2020-02-21 | 塞舌尔商元鼎音讯股份有限公司 | Hearing aid and method for adjusting output voice of hearing aid |
| CN110830897B (en) * | 2018-08-08 | 2021-04-09 | 原相科技股份有限公司 | Hearing aid and method for adjusting output voice of hearing aid |
| CN112399004A (en) * | 2019-08-14 | 2021-02-23 | 原相科技股份有限公司 | Sound output adjusting method and electronic device for executing adjusting method |
| CN112399004B (en) * | 2019-08-14 | 2024-05-24 | 达发科技股份有限公司 | Sound output adjusting method and electronic device for executing same |
| US20210277564A1 (en) * | 2020-03-03 | 2021-09-09 | Haier Us Appliance Solutions, Inc. | System and method for using sound to monitor the operation of a washing machine appliance |
| CN115398057A (en) * | 2020-03-03 | 2022-11-25 | 青岛海尔洗衣机有限公司 | System and method for monitoring operation of washing machine apparatus using sound |
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